Backpack canister vacuum cleaner



FIG. 1 is a perspective view of a backpack canister vacuum cleaner;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the opposite side being a mirror image; and,

FIG. 5 is a front elevational view thereof. 

An ornamental design for a backpack canister vacuum cleaner, as shown and described. 